From 34a5102c3235c470a6c77fba16cb971964d9c136 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 31 Jan 2017 19:37:54 +0100 Subject: [PATCH] net: bgmac: allocate struct bgmac just once & don't copy it MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit So far were were allocating struct bgmac in 3 places: platform code, bcma code and shared bgmac_enet_probe function. The reason for this was bgmac_enet_probe: 1) Requiring early-filled struct bgmac 2) Calling alloc_etherdev on its own in order to use netdev_priv later This solution got few drawbacks: 1) Was duplicating allocating code 2) Required copying early-filled struct 3) Resulted in platform/bcma code having access only to unused struct Solve this situation by simply extracting some probe code into the new bgmac_alloc function. Signed-off-by: Rafał Miłecki Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bgmac-bcma.c | 4 +--- drivers/net/ethernet/broadcom/bgmac-platform.c | 2 +- drivers/net/ethernet/broadcom/bgmac.c | 25 +++++++++++++++++-------- drivers/net/ethernet/broadcom/bgmac.h | 3 ++- 4 files changed, 21 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bgmac-bcma.c b/drivers/net/ethernet/broadcom/bgmac-bcma.c index 4a4ffc0..9281abd 100644 --- a/drivers/net/ethernet/broadcom/bgmac-bcma.c +++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c @@ -117,12 +117,11 @@ static int bgmac_probe(struct bcma_device *core) u8 *mac; int err; - bgmac = kzalloc(sizeof(*bgmac), GFP_KERNEL); + bgmac = bgmac_alloc(&core->dev); if (!bgmac) return -ENOMEM; bgmac->bcma.core = core; - bgmac->dev = &core->dev; bgmac->dma_dev = core->dma_dev; bgmac->irq = core->irq; @@ -307,7 +306,6 @@ static int bgmac_probe(struct bcma_device *core) err1: bcma_mdio_mii_unregister(bgmac->mii_bus); err: - kfree(bgmac); bcma_set_drvdata(core, NULL); return err; diff --git a/drivers/net/ethernet/broadcom/bgmac-platform.c b/drivers/net/ethernet/broadcom/bgmac-platform.c index 6f736c1..805e6ed 100644 --- a/drivers/net/ethernet/broadcom/bgmac-platform.c +++ b/drivers/net/ethernet/broadcom/bgmac-platform.c @@ -151,7 +151,7 @@ static int bgmac_probe(struct platform_device *pdev) struct resource *regs; const u8 *mac_addr; - bgmac = devm_kzalloc(&pdev->dev, sizeof(*bgmac), GFP_KERNEL); + bgmac = bgmac_alloc(&pdev->dev); if (!bgmac) return -ENOMEM; diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index 9122608..fe88126 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -1446,22 +1446,32 @@ int bgmac_phy_connect_direct(struct bgmac *bgmac) } EXPORT_SYMBOL_GPL(bgmac_phy_connect_direct); -int bgmac_enet_probe(struct bgmac *info) +struct bgmac *bgmac_alloc(struct device *dev) { struct net_device *net_dev; struct bgmac *bgmac; - int err; /* Allocation and references */ - net_dev = alloc_etherdev(sizeof(*bgmac)); + net_dev = devm_alloc_etherdev(dev, sizeof(*bgmac)); if (!net_dev) - return -ENOMEM; + return NULL; net_dev->netdev_ops = &bgmac_netdev_ops; net_dev->ethtool_ops = &bgmac_ethtool_ops; + bgmac = netdev_priv(net_dev); - memcpy(bgmac, info, sizeof(*bgmac)); + bgmac->dev = dev; bgmac->net_dev = net_dev; + + return bgmac; +} +EXPORT_SYMBOL_GPL(bgmac_alloc); + +int bgmac_enet_probe(struct bgmac *bgmac) +{ + struct net_device *net_dev = bgmac->net_dev; + int err; + net_dev->irq = bgmac->irq; SET_NETDEV_DEV(net_dev, bgmac->dev); @@ -1488,7 +1498,7 @@ int bgmac_enet_probe(struct bgmac *info) err = bgmac_dma_alloc(bgmac); if (err) { dev_err(bgmac->dev, "Unable to alloc memory for DMA\n"); - goto err_netdev_free; + goto err_out; } bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK; @@ -1521,8 +1531,7 @@ err_phy_disconnect: phy_disconnect(net_dev->phydev); err_dma_free: bgmac_dma_free(bgmac); -err_netdev_free: - free_netdev(net_dev); +err_out: return err; } diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h index 71f493f..dfebade 100644 --- a/drivers/net/ethernet/broadcom/bgmac.h +++ b/drivers/net/ethernet/broadcom/bgmac.h @@ -517,7 +517,8 @@ struct bgmac { int (*phy_connect)(struct bgmac *bgmac); }; -int bgmac_enet_probe(struct bgmac *info); +struct bgmac *bgmac_alloc(struct device *dev); +int bgmac_enet_probe(struct bgmac *bgmac); void bgmac_enet_remove(struct bgmac *bgmac); void bgmac_adjust_link(struct net_device *net_dev); int bgmac_phy_connect_direct(struct bgmac *bgmac); -- 2.7.4